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Elmax is a stainless powder steel with a useful middle-ground balance for a pocket knife. It offers wear resistance for regular slicing without putting as much emphasis on abrasive edge retention as M390 or S90V. If an Elmax knife has the blade shape and feel you want, the steel is a sensible part of that package.
What Is Elmax Steel?
Uddeholm Elmax SuperClean is a powder metallurgy stainless steel used in demanding tooling as well as knives. Uddeholm's product information describes its combination of wear resistance, corrosion resistance and dimensional stability. Those industrial properties help explain the alloy, but they do not prescribe one hardness or heat treatment for every knife.
Performance Ratings
For the science, we turn to Dr. Larrin Thomas of Knife Steel Nerds, who has kindly allowed us to share his ratings here.
| Property | Elmax |
|---|---|
| Abrasive edge retention | |
| Toughness | |
| Corrosion resistance |
Heat treatment, hardness and geometry affect actual knives.
Explore Elmax’s Tradeoffs
Choose a steel above to highlight its position and see all three exact ratings below. The full map fits your screen.
Stainless
Elmax
- Abrasive edge retention
- 5.5
- Toughness
- 4
- Corrosion resistance
- 8
Same position; corrosion ratings may differ:
All 48 rated materials. Numbers group steels at identical coordinates; colors describe stainless classification, not corrosion scores. Neither direction means a universally better knife.
Elmax’s ratings are shown above. Enable JavaScript to select another steel, or browse the full ratings table.
Elmax for Everyday Cutting
Elmax scores 5.5 for abrasive edge retention, 4 for toughness and 8 for corrosion resistance. It sits near S30V in this framework, with small differences in wear and corrosion ratings. Those half-point gaps are not a good reason to assume one finished knife will clearly outperform another.
For ordinary slicing, the grind, thickness behind the edge and sharpness all influence how the knife feels. Elmax provides useful material properties, while the maker's design determines how you experience them.
Toughness and Edge Damage
A toughness rating of 4 puts Elmax below the tougher stainless choices such as 14C28N. It can suit normal controlled cutting, but a thin edge still needs care around hard objects and twisting loads. If your work repeatedly damages edges, choose for that problem instead of seeking a steel that wears more slowly.
Sharpening and Rust Care
Diamond or cubic boron nitride (CBN) abrasives are useful options for Elmax's hard carbides. Match the bevel for routine maintenance, choose a coarser abrasive for damage and finish by removing the burr. Frequent small touch-ups can keep the job manageable.
Elmax is stainless rather than rust-proof. Clean the blade after food prep or wet work and dry the whole knife before storage. Its corrosion rating of 8 is useful for everyday carry, but it does not make any Elmax knife a dedicated saltwater tool.
What Matters When Buying an Elmax Knife?
Start with the knife you will actually carry: its handle, blade shape, opening method and size. Check the maker's heat-treatment or hardness information when available, without treating a higher hardness number as an automatic improvement. Elmax is an established option, and a well-suited knife does not become a poor choice because another steel scores slightly higher. Our knife steel guide explains the main tradeoffs.
Composition
Our steel composition guide explains what the elements do and how to read these values.
Elmax: Producer-listed typical chemistry, mass %. Uddeholm: Elmax SuperClean.
| Element | Elmax |
|---|---|
| Carbon (C) | 1.7% |
| Silicon (Si) | 0.8% |
| Manganese (Mn) | 0.3% |
| Chromium (Cr) | 18% |
| Molybdenum (Mo) | 1% |
| Vanadium (V) | 3% |
